Other scriptures warning of hidden sin?
What other scriptures warn against harboring sin like in Job 20:13?

Setting the Scene

Job 20:13 paints a vivid picture of a person who “keeps evil in his mouth” as though savoring a sweet morsel. The verse exposes the danger of secretly treasuring sin instead of repenting. Scripture consistently warns that concealed, cherished sin brings spiritual decay and divine discipline.


Job 20:13 — Savoring Sin

“though he hides it and will not let it go but keeps it in his mouth”

The metaphor of holding sin like candy highlights two realities:

• Sin can feel pleasant for a moment.

• Keeping it hidden only ensures eventual bitterness and judgment.


Why Harboring Sin Is Dangerous

• It dulls spiritual sensitivity (Ephesians 4:17–19).

• It blocks fellowship with God (Psalm 66:18; Isaiah 59:1–2).

• It invites discipline and loss of blessing (Hebrews 12:5–11).


Scriptures That Echo the Warning

Psalm 66:18 – “If I had cherished iniquity in my heart, the Lord would not have listened.”

– Cherished sin cuts off effective prayer.

Proverbs 28:13 – “He who conceals his transgressions will not prosper, but whoever confesses and renounces them will find mercy.”

– Concealment = stagnation; confession = mercy.

Genesis 4:7 – “Sin is crouching at the door; its desire is for you, but you must rule over it.”

– Unchecked sin seeks mastery.

Isaiah 59:1–2 – “Your iniquities have made a separation between you and your God.”

– Hidden sin erects a barrier that only repentance can remove.

James 1:14–15 – “Each one is tempted when he is lured and enticed by his own desires. Then desire, having conceived, gives birth to sin; and sin, when it is full-grown, gives birth to death.”

– Internal indulgence leads to external destruction.

Ephesians 4:26–27 – “Do not let the sun set upon your anger, and do not give the devil a foothold.”

– Lingering sin grants Satan territory.

Hebrews 3:13 – “Encourage one another daily… so that none of you may be hardened by sin’s deceitfulness.”

– Ongoing sin hardens the heart.

Hebrews 12:1 – “Let us throw off everything that hinders and the sin that so easily entangles.”

– Sin is a snare that must be removed, not managed.

1 Corinthians 5:6–7 – “Do you not know that a little yeast leavens the whole batch of dough?… Cleanse out the old leaven.”

– Even small, hidden sin infiltrates and corrupts the whole life.

Galatians 6:7–8 – “Do not be deceived: God is not mocked. For whatever a man sows, that he will also reap.”

– Harboring sin plants seeds of inevitable harvest.

1 John 1:6, 9

– v.6: “If we say we have fellowship with Him yet walk in darkness, we lie and do not practice the truth.”

– v.9: “If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.”

– The remedy to hidden sin is honest confession.


Practical Takeaways

• Regular self-examination: ask the Spirit to expose any hidden sin (Psalm 139:23–24).

• Immediate confession: respond quickly when conviction comes (1 John 1:9).

• Radical removal: cut off occasions for recurring sin (Matthew 5:29–30).

• Accountability: walk in the light with trusted believers (James 5:16).

• Renewed mind: replace sinful cravings with Scripture and prayer (Romans 12:2).


Final Encouragement

Sin tastes sweet only for a moment; its aftertaste is bitterness and separation. God offers freedom and cleansing the moment we forsake secret iniquity and run to His forgiving grace.

How can Job 20:13 help us understand the deceitfulness of sin?
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